//MIT License

//Copyright (c) 2017 腾讯云

//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:

//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.

//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//SOFTWARE.

//FROM https://github.com/tencentyun/cos-cpp-sdk-v5/blob/master/include/util/crc64.h

#ifndef MPCRC64_H
#define MPCRC64_H

#include <stdint.h>
#include <cstddef>

namespace MP{

class CRC64 {
public:
    static uint64_t CalcCRC(uint64_t crc, void *buf, size_t len);
    static uint64_t CombineCRC(uint64_t crc1, uint64_t crc2, uintmax_t len2);
    static uint64_t CalcCRC(uint64_t crc, void *buf, size_t len, bool little);
};

}   //END MP

#endif // MPCRC64_H
